So I moved to Dhizuku. It's a bit hard to setup, but once I'm done it's felt like untethered jailbreak - I don't have to complicated dance to start Shizuku now. Dhizuku basically make your phone a company phone, except it report to you. To setup a "managed main profile" you'd need to remove all accounts visible in Android account system and type a long ADB command so I don't think it can be maliciously done.
I suppose this will be how we'll use F-Droid in the next year for enthusiasts.
I don't have a banking app installed on my phone. When I need to make a bank transfer I sit down at the computer.
Likely this gives them another way to milk information out of you, push their marketing onto to you, and saves them from having to manage physical devices. The obvious downside is of course a degradation in security and further cementing the duopoly and more or less forced participation in it that we as citizens have to endure.